If salvation could be obtained in dreams or by impartation, there will be no need for believers to go out and preach. But this is not the case.

God has instructed everyone who believes in Jesus, to preach the gospel to the world. The gospel is a message that is to be heard and believed.

We are given simple practical conversation starters to use when evangelizing, and how to continue the conversation, keeping in mind the motive behind it- to preach the gospel.